| Archivist | a person whose job is to develop and manage a collection of historical documents or records of a government, a family, a place or an organization; the place where these records are stored | 
| Archaeologist | a person who studies cultures of the past, and of periods of history by examining the parts of buildings and objects found in the ground | 
| Conservator | a person who is responsible for repairing and preserving works of art, buildings and other things of cultural interest | 
| Curator | a person whose job is to be in charge of the objects or works of art in a museum or an art gallery, etc. | 
| Ecosystem | all the plants and living creatures in a particular area considered in relation to their physical environment | 
| Eroding | to gradually destroy the surface of something through the action of wind, rain, etc.; to be gradually destroyed in this way | 
| Extinct | (of a type of plant, animal, etc.) no longer in existence | 
| Fletch | a fin-shaped stabilizing device attached to arrows commonly made of plastic or feathers | 
| Ice patch | sheets of snow and ice that do not move and remain frozen throughout the year | 
| Pingo | A mound of earth-covered ice found only in areas with permafrost | 
| Pomp | the impressive clothes, decorations, music, etc. and traditional customs that are part of an official occasion or ceremony | 
| Sea | the saltwater that covers most of the earth’s surface and surrounds its continents and islands | 
| Sinew | a strong band of tissue in the body that joins a muscle to a bone |